Answer:
8 packages.
Step-by-step explanation:
8 x 6 is 48. So that will get Mary 44 that she needs and 4 extras. Any smaller number of packages will mean not enough cookies. :-(
10^2 +7^2=x^2
100 +49=x^2
149=x^2
Square root of 149 =12.2
X=12.2
Not sure what is asking,but if it is asking for the equation. Then it is 13/3.